Method for increasing output torque density of magnetic gear

The present invention relates to a method for increasing an output torque density of a magnetic gear. A magnetic gear portion in an axial series structure of a magnetic gear composite motor is designed as a double-layer magnetic gear structure to fully utilize interior space. The double-layer magnetic gear structure is vertically symmetrical. A toothed stator has a U-shaped cross section, the outer side of the toothed stator is surrounded by an outer rotor, the inner side of the U-shaped structure is embedded with an inner rotor, and there is an air gap between the inner rotor and the toothedstator and between the outer rotor and the toothed stator. In the present invention, the interior space of the magnetic gear is fully utilized, and the output torque density of the magnetic gear is further improved. 本发明涉及种提高磁齿轮输出力矩密度的方法，将磁齿轮复合电机轴向串联结构中的磁齿轮部分设计成双层磁齿轮结构以充分利用内部空间，所述双层磁齿轮结构上下对称，其中，齿形定子的截面呈U形结构，所述齿形定子外侧被外转子包围，U形结构的内侧嵌有内转子，所述内转子与齿形定子之间和所述外转子与齿形定子之间均存在气隙。本发明充分利用了磁齿轮内部的空间，进步地提高了磁齿轮输出力矩密度。